Simulating and investigating compressible flows interaction with fractal structures

Omar Es-Sahli, Adrian Sescu, Mohammed Z Afsar, Oliver Buxton

Research output: Contribution to conferenceAbstract

Abstract

Previous experimental and numerical studies have investigated incompressible flow interactions with multi-scale fractal structures with the objective of generating turbulence at multiple scales. Depending on various flow conditions, it was found that these fractal structures are able to enhance mixing and scalar transport, and in some cases to contribute to the reduction of flow generated sound in certain frequency ranges. The interaction of compressible flows with multi-scale fractal structures did not receive much attention as the focus was entirely on the incompressible regime. The objective of this study is to conduct large eddy simulations of flow interactions with various fractal structures in the compressible regime and to extract and analyze different flow statistics in an attempt to determine the effect of compressibility. Immersed boundary methods will be employed to overcome the difficulty of modeling the fractal structures, with adequate mesh resolution around small features of the fractal shapes.

Conference

Conference71st Annual Meeting of the APS Division of Fluid Dynamics
Abbreviated titleAPS-DFD 2018
CountryUnited States
CityGeorgia
Period18/11/1821/11/18
Internet address

Fingerprint

compressible flow
fractals
interactions
incompressible flow
large eddy simulation
compressibility
mesh
frequency ranges
turbulence
statistics
scalars
acoustics

Keywords

  • computational fluid dynamic (CFD) model
  • flow interactions
  • fractal structures

Cite this

Es-Sahli, O., Sescu, A., Afsar, M. Z., & Buxton, O. (2018). Simulating and investigating compressible flows interaction with fractal structures. Abstract from 71st Annual Meeting of the APS Division of Fluid Dynamics, Georgia, United States.
Es-Sahli, Omar ; Sescu, Adrian ; Afsar, Mohammed Z ; Buxton, Oliver. / Simulating and investigating compressible flows interaction with fractal structures. Abstract from 71st Annual Meeting of the APS Division of Fluid Dynamics, Georgia, United States.1 p.
@conference{152f0de6cf8d4aeaa0ba07b187731c52,
title = "Simulating and investigating compressible flows interaction with fractal structures",
abstract = "Previous experimental and numerical studies have investigated incompressible flow interactions with multi-scale fractal structures with the objective of generating turbulence at multiple scales. Depending on various flow conditions, it was found that these fractal structures are able to enhance mixing and scalar transport, and in some cases to contribute to the reduction of flow generated sound in certain frequency ranges. The interaction of compressible flows with multi-scale fractal structures did not receive much attention as the focus was entirely on the incompressible regime. The objective of this study is to conduct large eddy simulations of flow interactions with various fractal structures in the compressible regime and to extract and analyze different flow statistics in an attempt to determine the effect of compressibility. Immersed boundary methods will be employed to overcome the difficulty of modeling the fractal structures, with adequate mesh resolution around small features of the fractal shapes.",
keywords = "computational fluid dynamic (CFD) model, flow interactions, fractal structures",
author = "Omar Es-Sahli and Adrian Sescu and Afsar, {Mohammed Z} and Oliver Buxton",
year = "2018",
month = "11",
day = "18",
language = "English",
note = "71st Annual Meeting of the APS Division of Fluid Dynamics : Boundary Layers: High Speed/ Compressible, APS-DFD 2018 ; Conference date: 18-11-2018 Through 21-11-2018",
url = "https://www.apsdfd2018.org/",

}

Es-Sahli, O, Sescu, A, Afsar, MZ & Buxton, O 2018, 'Simulating and investigating compressible flows interaction with fractal structures' 71st Annual Meeting of the APS Division of Fluid Dynamics, Georgia, United States, 18/11/18 - 21/11/18, .

Simulating and investigating compressible flows interaction with fractal structures. / Es-Sahli, Omar; Sescu, Adrian; Afsar, Mohammed Z; Buxton, Oliver.

2018. Abstract from 71st Annual Meeting of the APS Division of Fluid Dynamics, Georgia, United States.

Research output: Contribution to conferenceAbstract

TY - CONF

T1 - Simulating and investigating compressible flows interaction with fractal structures

AU - Es-Sahli, Omar

AU - Sescu, Adrian

AU - Afsar, Mohammed Z

AU - Buxton, Oliver

PY - 2018/11/18

Y1 - 2018/11/18

N2 - Previous experimental and numerical studies have investigated incompressible flow interactions with multi-scale fractal structures with the objective of generating turbulence at multiple scales. Depending on various flow conditions, it was found that these fractal structures are able to enhance mixing and scalar transport, and in some cases to contribute to the reduction of flow generated sound in certain frequency ranges. The interaction of compressible flows with multi-scale fractal structures did not receive much attention as the focus was entirely on the incompressible regime. The objective of this study is to conduct large eddy simulations of flow interactions with various fractal structures in the compressible regime and to extract and analyze different flow statistics in an attempt to determine the effect of compressibility. Immersed boundary methods will be employed to overcome the difficulty of modeling the fractal structures, with adequate mesh resolution around small features of the fractal shapes.

AB - Previous experimental and numerical studies have investigated incompressible flow interactions with multi-scale fractal structures with the objective of generating turbulence at multiple scales. Depending on various flow conditions, it was found that these fractal structures are able to enhance mixing and scalar transport, and in some cases to contribute to the reduction of flow generated sound in certain frequency ranges. The interaction of compressible flows with multi-scale fractal structures did not receive much attention as the focus was entirely on the incompressible regime. The objective of this study is to conduct large eddy simulations of flow interactions with various fractal structures in the compressible regime and to extract and analyze different flow statistics in an attempt to determine the effect of compressibility. Immersed boundary methods will be employed to overcome the difficulty of modeling the fractal structures, with adequate mesh resolution around small features of the fractal shapes.

KW - computational fluid dynamic (CFD) model

KW - flow interactions

KW - fractal structures

UR - http://meetings.aps.org/Meeting/DFD18/Session/D38.4

M3 - Abstract

ER -

Es-Sahli O, Sescu A, Afsar MZ, Buxton O. Simulating and investigating compressible flows interaction with fractal structures. 2018. Abstract from 71st Annual Meeting of the APS Division of Fluid Dynamics, Georgia, United States.